Author(s): H. Iwamoto; Y. Nihei
Linked Author(s): Yasuo Nihei
Keywords: Discharge; H-ADCP; DIEX method; River flow; Compound channel
Abstract: We present and apply a new discharge monitoring system that uses H-ADCP measurements and numerical simulations to flood-discharge monitoring in a compound channel. In the numerical simulation, we introduce two types of numerical procedures for data assimilation using an additional term aF and Manning's roughness coefficient n, called the dynamic interpolation and extrapolation-f (DIEX-f) and DIEX-n methods, respectively. These methods were applied to flood-discharge monitoring in the middle reach of the Edogawa River. The results indicate that DIEX-f and DIEX-n methods perform good for discharge monitoring under large flood conditions, showing the applicability of the present method into flooddischarge monitoring in a compound channel.
Year: 2009